For these brawny dogs, bratwursts are simmered in a mixture of beer with sweet onions, caraway seeds, and a spoonful of sugar, then charred on the grill. If you're going full-on, the onions are strained and sauteed in a skillet on the grill until golden, then mixed with sauerkraut. You'll be booed out of wisconsin if you bring soft potato buns to the party--for a true cheesehead, only a sturdy hoagie roll will do.